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Dallas police released a new surveillance video they hope will help them find a person of interest in the case of a Lake Highlands woman killed in her home. (Published Friday, March 15, 2013)

Dallas police want the public's help in finding several people seen at various stores using the credit cards of a 79-year-old woman killed in her East Dallas home last week.

Avanell Cowgill's daughter asked police on Saturday to check on her. Officers went to the home in the 11300 block of Earlywood Drive in East Dallas and found the back door open and Cowgill dead inside the home.

In one photo, he is seen wearing a blue jeans, white shoes, a gray windbreaker and a baseball cap with a "B" on the front. Police say the same man was seen at a second store wearing blue jeans, white shoes, a brown work jacket with a hood and a black-and-red baseball cap with a "B" on the front.

The second person is a white man who is 5 feet 8 inches tall and weighs about 160 pounds. He was seen wearing a red, yellow and black horizontal striped shirt.

New Video Released in Dallas Woman Slaying

Police have released new video in the case involving a Dallas woman, 78-year-old Avanell Cowgill, who was found dead in her home Saturday. (Published Thursday, March 14, 2013)

Dallas police released a photo of the car the two men were seen driving, it is an older model silver four-door compact car missing a back right hubcap.

Police also released a YouTube video from various angles of a store surveillance camera:

There are two separate rewards concerning the crime. Dallas CrimeStoppers is offering a $5,000 reward and Oak Farms Dairy is offering a $10,000 reward for information leading to an arrest and indictment in this murder case.

Police Look for People of Interest in Slaying of 79-Year-Old Woman

Dallas homicide detectives released photos of two people seen at various stores on Friday, using Avanell Cowgill's credit cards. (Published Tuesday, March 12, 2013)

Anyone with information is asked to call the lead detective on the case, Detective Scott Sayers at 214-671-3647.